78230751 has 16 divisors (see below), whose sum is σ = 109340160. Its totient is φ = 49658400.

The previous prime is 78230743. The next prime is 78230807. The reversal of 78230751 is 15703287.

It is not a de Polignac number, because 78230751 - 2³ = 78230743 is a prime.

It is a super-2 number, since 2×78230751² = 12240100804048002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78210751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13326 + ... + 18276.

It is an arithmetic number, because the mean of its divisors is an integer number (6833760).

Almost surely, 2^78230751 is an apocalyptic number.

78230751 is a deficient number, since it is larger than the sum of its proper divisors (31109409).

78230751 is a wasteful number, since it uses less digits than its factorization.

78230751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5206.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 78230751 is about 8844.8149217494. The cubic root of 78230751 is about 427.6867868138.

The spelling of 78230751 in words is "seventy-eight million, two hundred thirty thousand, seven hundred fifty-one".